package com.sky.service.user.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.user.UserMapper;
import com.sky.pojo.User;
import com.sky.properties.JwtProperties;
import com.sky.properties.WeChatProperties;
import com.sky.result.Result;
import com.sky.service.user.UserService;
import com.sky.utils.HttpClientUtil;
import com.sky.vo.UserLoginVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
@Slf4j
public class UserServiceImpl implements UserService {

    public static final String WX_LOGIN="https://api.weixin.qq.com/sns/jscode2session";
    @Autowired
    private WeChatProperties weChatProperties;
    @Autowired
    private UserMapper userMapper;

    /**
     * 微信登录
     * @param userLoginDTO
     * @return
     */
    @Override
    public User wxLogin(UserLoginDTO userLoginDTO) {
        //调用微信接口服务.获得当前微信用户openid
        Map<String, String> map=new HashMap<>();
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",userLoginDTO.getCode());
        map.put("grant_type","authorization_code");
        String json = HttpClientUtil.doGet(WX_LOGIN, map);
        JSONObject jsonObject = JSON.parseObject(json);

        String openid = jsonObject.getString("openid");

        //判断openid是否为空,为空说明登录失败
        if (openid==null){
            //登录失败
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }
        //如果不为空,判断在表里面是否存在
        User user=userMapper.selectByOpenId(openid);
            //有,老用户;没有,新用户
        if (user==null){
            //不存在,自动注册
            user = User.builder()
                    .openid(openid)
                    .createTime(LocalDateTime.now())
                    .build();
            //保存到表中
            userMapper.save(user);
        }


        //
        return user;
    }
}
